<template>
  <div class="home-container">
    <!-- toubu搜索 -->
    <van-nav-bar class="page-nav-bar" fixed>
      <van-button
        class="search-btn"
        slot="title"
        type="info"
        size="small"
        round
        icon="search"
        to="/search"
        >搜索</van-button
      >
    </van-nav-bar>

    <!-- 频道选择 -->
    <van-tabs v-model="active" swipeable animated class="channel-tabs">
      <van-tab
        :title="channel.name"
        v-for="channel in channels"
        :key="channel.id"
      >
        <article-list ref="article-list" :channel="channel" />
      </van-tab>

      <!-- 按钮 -->

      <template #nav-right>
        <div class="placeholder"></div>
        <div class="hamburger-btn" @click="isChannelEditShow = true">
          <i class="toutiao toutiao-gengduo"></i>
        </div>
      </template>
    </van-tabs>

    <!-- 频道编辑 -->
    <van-popup
      v-model="isChannelEditShow"
      closeable
      close-icon-position="top-left"
      position="bottom"
      :style="{ height: '100%' }"
    >
      <channel-edit
        :userChannels="channels"
        :activeIndex="active"
        @onUpdateActive="onUpdateActive"
      ></channel-edit>
    </van-popup>
  </div>
</template>

<script>
import { getUserChannels } from "@/api/user";
import ArticleList from "./components/article-list";
import ChannelEdit from "./components/channel-edit.vue";
import { mapState } from "vuex";
import { getItem } from "@/utils/storage.js";

export default {
  name: "HomeIndex",
  components: { ArticleList, ChannelEdit },
  props: {},
  data() {
    return {
      active: 0,
      channels: [],
      isChannelEditShow: false,
    };
  },
  computed: { ...mapState(["user"]) },
  watch: {},
  created() {
    this.loadChannels();
  },
  mounted() {},
  methods: {
    async loadChannels() {
      try {
        // const { data } = await getUserChannels();
        // this.channels = data.data.channels;

        let channels = [];
        if (this.user) {
          const { data } = await getUserChannels();
          channels = data.data.channels;
        } else {
          const localChannels = getItem("TOUTIAO_CHANNELS");
          if (localChannels) {
            channels = localChannels;
          } else {
            const { data } = await getUserChannels();
            channels = data.data.channels;
          }
        }
        this.channels = channels;
      } catch (err) {
        this.$toast("获取频道数据失败");
      }
    },

    onUpdateActive(index, isChannelEditShow = true) {
      this.active = index;
      this.isChannelEditShow = isChannelEditShow;
    },
  },
};
</script>

<style scoped  lang="less">
.home-container {
  padding-top: 174px;
  padding-bottom: 100px;
  /deep/ .van-nav-bar__title {
    max-width: unset;
  }
  .search-btn {
    width: 555px;
    height: 64px;
    background-color: #5babfb;
    border: none;
    font-size: 28px;
    .van-icon {
      font-size: 32px;
      color: #fff;
    }
  }
}
/deep/ .channel-tabs {
  .van-tabs__wrap {
    position: fixed;
    top: 92px;
    z-index: 1;
    left: 0;
    right: 0;
    height: 82px;
  }

  .van-tab {
    min-width: 200px;
    border-right: 1px solid #edeff3;
    font-size: 30px;
    color: #777777;
  }

  .van-tab--active {
    color: #333333;
  }

  .van-tabs__nav {
    padding-bottom: 0;
  }

  .van-tabs__line {
    bottom: 8px;
    width: 31px !important;
    height: 6px;
    background-color: #3296fa;
  }

  .placeholder {
    flex-shrink: 0;
    width: 66px;
    height: 82px;
  }

  .hamburger-btn {
    position: fixed;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 66px;
    height: 82px;
    background-color: #fff;
    opacity: 0.902;

    i.toutiao {
      font-size: 33px;
    }
    &:before {
      content: "";
      position: absolute;
      left: 0;
      width: 1px;
      height: 100%;
      background-image: url(~@/assets/gradient-gray-line.png);
      background-size: contain;
    }
  }
}
</style>